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Vulnerability record · public intelligence
CVE-2021-21408
HIGH
Access to restricted PHP code by dynamic static class access in smarty
Published Jan 10, 2022 · Updated Nov 3, 2026
Severity · CVSSHIGH · Not scored
Known exploitationNot listed
EPSS / likelihood2.08%
QFinch risk scoreNot available
Original summary
Normalized public record · Updated Nov 3, 2026
Access to restricted PHP code by dynamic static class access in smarty
Publisher and source text is retained separately from QFinch interpretation.
QFinch assessment
Template authors could run restricted static php methods.
Potential impact
Template authors could run restricted static php methods.
Evidence: public source recordsAffected products
| Affected package, product or range | Fix status |
|---|---|
| Consult the referenced vendor advisory for affected versions. | Consult source advisory |
Matching a version is only one part of assessing exposure. QFinch has not assessed your environment on this public page.
Remediation
Apply the vendor-supported fixed release or mitigation, then verify the affected component is no longer reachable.
- Confirm the affected product and reachable code path exist in your environment.
- Apply the vendor-supported patch or mitigation from the primary advisory.
- Rescan the exact deployed revision and retain verification evidence.
Evidence coverage
FIRST-EPSSCVE-LIST-V5
- SSVC priority
- MEDIUM
- Confidence
- Not available
- Aliases
- None reported
Scores appear only when corresponding evidence exists. Missing data is never interpreted as zero risk.
Sources and record history
- Security advisory ↗
- Patch commit ↗
- Source repository ↗
- Source repository ↗
- [debian-lts-announce] 20220505 [SECURITY] [DLA 2995-1] smarty3 security update ↗
- DSA-5151 ↗
- GLSA-202209-09 ↗
- FEDORA-2022-52154efd61 ↗
- FEDORA-2022-d5fc9dcdd7 ↗
Record history
Published Jan 10, 2022 · Last refreshed Nov 3, 2026